CN105547848B - A kind of mixing rock core test cabinet and mud stone breakthrough pressure test device - Google Patents
A kind of mixing rock core test cabinet and mud stone breakthrough pressure test device Download PDFInfo
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- CN105547848B CN105547848B CN201610019815.3A CN201610019815A CN105547848B CN 105547848 B CN105547848 B CN 105547848B CN 201610019815 A CN201610019815 A CN 201610019815A CN 105547848 B CN105547848 B CN 105547848B
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- 239000002351 wastewater Substances 0.000 claims abstract description 9
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- IJGRMHOSHXDMSA-UHFFFAOYSA-N nitrogen Substances N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 14
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- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 claims description 2
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Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
- G01N3/10—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces generated by pneumatic or hydraulic pressure
- G01N3/12—Pressure testing
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume, or surface-area of porous materials
- G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
- G01N15/0806—Details, e.g. sample holders, mounting samples for testing
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
Abstract
The invention discloses a kind of mixing rock core test cabinet and mud stone breakthrough pressure test device, two shale layers, the sandwiched sandstone layer between two sandstone layers are arranged in the inner cavity of the core test room, and upper and lower shale layer is equipped with reserved space with core chamber's upper and lower side.Core test room is equipped with the water filling port to reserved space water filling, the water filling gas injection port and discharge outlet to sandstone layer water filling gas injection.The water filling port water pipe of mixing rock core test cabinet is connected to sink, water filling gas injection port pipeline parallel connection sink accesses wastewater disposal basin with gas cylinder, discharge outlet with water pipe, and controlled valve and pressure gauge are in series on each pipeline；Sink is also connected with booster pump；Multigroup probe groups are inserted into sandstone layer, the pressure and resistivity that probe groups are detected are passed to the ends PC and are analyzed, to form mud stone breakthrough pressure test device.The device, which compensates for traditional breakthrough pressure test, can not simulate the defect of actual formation condition, and keep test more accurate by the situation of change of probe groups measuring of moisture content.
Description
Technical field
The present invention relates to a kind of mixing rock core test cabinets, and the mud stone breakthrough pressure comprising the mixing rock core test cabinet is surveyed
Trial assembly is set, and rock heterogeneous fluid breakthrough pressure test experiments are done suitable for reservoir engineer.
Background technology
It is separated by shale layer between multilayer sandstone reservoirs gas-bearing formation and water layer, when gas-bearing formation produces, the pressure in gas-bearing formation is not
It is disconnected to reduce, and the pressure of water layer remains unchanged, and pressure difference will be formed between gas-bearing formation and water layer, when pressure difference once reach mud stone every
When the breakthrough pressure of layer, stratum water channeling will occur in gas-bearing formation, water, which enters in gas-bearing formation, reduces gas well deliverability, influences gas well and normally gives birth to
Production.Existing mud stone breakthrough pressure test method is the test of static state, and the principle of test is that mud stone rock core is placed on rock core clamping
In device, water is injected in the arrival end of clamper, when rock core outlet end water breakthrough, corresponding pressure is breakthrough pressure, and according to
Darcy formula, thickness and the proportional relationship of pressure difference of mud stone can calculate the breakthrough pressure of the arbitrary mud stone thickness in stratum.It is existing
Method defect is：(1) oil gas flowing is not accounted in test process, the type of flow differs larger with practical；(2) outlet is brought out
It is difficult to observe when water, water breakthrough has lag relative to breakthrough；(3) capillary end effect is not considered.
Invention content
In order to solve the deficiencies in the prior art, the present invention provides a kind of mixing rock core test cabinet, and includes the migmatite
The mud stone breakthrough pressure test device of heart test cabinet, the mixing rock core test cabinet include cavity and lid, and sandstone is housed in cavity
Layer and two kinds of different type rock cores of shale layer, sandwiched sandstone layer between two layers of shale layer, between shale layer and test cabinet upper and lower side
Equipped with reserved space be used for water filling, more actually in compound stratum reservoir cap rock geologic structure.The mud stone breakthrough pressure is tested
Device is in series with controlled valve, pressure gauge mixing rock core test cabinet by piping connection sink, gas cylinder on each pipeline,
Mix the probe groups equipped with multiple detection its resistivity and pressure in the sandstone layer in rock core test cabinet, the data of probe groups detection
It is transferred to the ends PC to be recorded and analyzed, be tested using the mud stone breakthrough pressure test device, it is real to be resistant to enough more actually simulations
Border formation condition, and keep test more accurate by the situation of change of probe groups measuring of moisture content, considering fluid flowing
While the breakthrough pressure of shale layer is tested.
The invention is realized by the following technical scheme：
A kind of mixing rock core test cabinet, includes the cavity of one end open, and the open end of cavity is detachably arranged for sealing
The lid of cavity；Sandstone layer is equipped in the middle part of the cavity in the horizontal direction, the upper and lower surface of the sandstone layer is arranged with shale layer,
There are reserved spaces between each shale layer end adjacent with the cavity；The cavity wall of the cavity be equipped with it is described
The water filling port of reserved space connection forms water layer by water filling port to the reserved space water filling；
Also symmetrically offer water filling gas injection port and discharge outlet in the cavity wall of the cavity, water filling gas injection port and discharge outlet with
Sandstone layer is connected to；The water filling gas injection port be used to make sandstone layer saturation, sandstone layer saturation to the sandstone layer water filling after again to institute
Stating sandstone layer gas injection makes the saturated water in sandstone layer outside discharge outlet outflow cavity；
The lid is equipped with multiple relief holes, which is used to allow the resistivity and pressure of sandstone layer described in bit test
Probe groups.
Further, there are four the relief holes on the lid.
A kind of mud stone breakthrough pressure test device including mixing rock core test cabinet, including mixing rock core test cabinet, this is mixed
The water filling gas injection port closed on core test room is connected to by pipeline with sink, is connected to the pipeline of water filling gas injection port and sink close to water
Slot end is in series with second switch valve, is in series with first pressure gauge close to water filling gas injection port end；Pipeline where first pressure gauge is also
It is parallel with the gas cylinder equipped with inert gas；Pipeline upper edge gas injection direction between first pressure gauge and gas cylinder has been sequentially connected in series the 4th
Pressure gauge, first switch valve, drier；
Water filling port on the mixing rock core test cabinet is connected to by water pipe with sink respectively；Each water filling port is connected to sink
Water pipe on close to water filling port end be in series with second pressure gauge, third pressure gauge respectively, be in series with third respectively close to sink end
Controlled valve, the 4th controlled valve；
Discharge outlet on the mixing rock core test cabinet is connected to by water pipe with wastewater disposal basin, the water between discharge outlet and wastewater disposal basin
Pipe upper edge drainage direction has been sequentially connected in series the 5th controlled valve, the 5th pressure gauge；
Multiple measurement sandstone layer different time resistivity and pressure are mounted in sandstone layer in the mixing rock core test cabinet
Probe groups, each probe groups from mixing rock core test cabinet lid on relief hole be inserted into from the top down in the sandstone layer
Portion, and each probe groups only needle point end can measure other position insulation processings；The data transmission of the probe groups monitoring arrives
The data that probe groups monitor are converted to water saturation, the analysis of sandstone layer using programming Archie formula by the ends PC, the ends PC
Relationship between water saturation, displacement pressure difference, interlayer pressure difference and water yield；When shale layer is broken through, the electricity of probe groups monitoring
Resistance rate can decline rapidly, while sandstone layer water saturation increases sharply, and the interlayer pressure difference measured at this time is the prominent of shale layer
Broken pressure.
Further, meets the needs of repeatedly testing to monitor the water in sink in real time to be replenished in time, the water
Water-level gauge is additionally provided in slot, sink is also connected with a booster pump, and booster pump is used to add confining pressure to core chamber.
Further, in order to make the gas in gas cylinder the physical-chemical reactions such as absorption will not occur with sandstone, mud stone, to really
The accuracy of test result is protected, the gas in the gas cylinder is nitrogen.
Further, each probe groups include to measure the probe of sandstone stressor layer and measure sandstone layer resistivity simultaneously
Probe.
Beneficial effects of the present invention：
Between sandstone layer is folded in two shale layers in the mixing rock core test cabinet of the present invention, while two shale layers and test
Room upper and lower end face is equipped with reserved space and forms water layer for water filling.Include the sandstone breakthrough pressure test of the mixing rock core test cabinet
Device during the test can more actually simulated formation fluid flow effect, solve and do the test of rock breakthrough pressure at present
Shi Wufa simulates the problem of fluid dynamic stream moves effect, realizes that dynamic measures, and keeps the breakthrough pressure measured more accurate true, right
The directive function bigger of actual production.And the utensil that the apparatus structure more simply uses is also relatively inexpensive, and other opposite rock cores are prominent
Broken pressure test experimental cost is lower.
Description of the drawings
Fig. 1 is the vertical view for the cavity that rock core test cabinet is mixed in embodiment；
Fig. 2 is the vertical view for the lid that rock core test cabinet is mixed in embodiment；
Fig. 3 is the schematic cross-sectional view for the inside cavity that rock core test cabinet is mixed in embodiment；
Fig. 4 is the schematic diagram of mud stone breakthrough pressure test device in embodiment；
Fig. 5 is the curve of the resistance value for the different time that four probe groups measure in test process in embodiment；
Fig. 6 is the differential pressure curve obtained in embodiment；
Fig. 7 is the curve that experimental result carries out that binomial returns.
Reference numeral
1- cavitys；11- sandstone layers；12- shale layers；13- reserved spaces；14- water filling ports；15- water filling gas injection ports；16- is arranged
The mouth of a river；2- lids；201- relief holes；20- mixing rock core test cabinets；21- sinks；22- second switch valves；23- first pressures
Table；24- gas cylinders；25- driers；26- first switch valves；The 4th pressure gauges of 27-；28- second pressure gauges；29- third pressure
Table；30- third controlled valves；The 4th controlled valves of 31-；32- wastewater disposal basins；The 5th controlled valves of 33-；The 5th pressure gauges of 34-；
35- probe groups；The ends 36-PC；37- water-level gauges；38- booster pumps.
Specific implementation mode
The invention will be further described with reference to the accompanying drawings and examples.
Fig. 3 as shown in Figure 1, Figure 2 and a kind of shown, mixing rock core test cabinet, generally cylindrical, cuboid or other shapes
Shape, includes the cavity 1 of one end open, detachable lid 2 of the setting for seal cavity 1 in the open end of cavity, in the present embodiment
Cavity 1 and lid 2 form cylindrical mixing rock core test cabinet, are connected with nut by positioning pin.1 middle part of the cavity is along water
Square it is arranged with shale layer 12 to the upper and lower surface equipped with sandstone layer 11, the sandstone layer 11, each shale layer 12 and institute
State between the adjacent end of cavity 1 that there are reserved spaces 13.The cavity wall of the cavity 1 is equipped with and is connected to the reserved space 13
Water filling port 14, by water filling port 14 to 13 water filling of the reserved space formed water layer.
Water filling gas injection port 15 and discharge outlet 16, water filling gas injection port 15 and row are also symmetrically offered in the cavity wall of the cavity 1
The mouth of a river 16 is connected to sandstone layer 11；The water filling gas injection port 15 be used for 11 water filling of the sandstone layer make sandstone layer 11 saturation,
Sandstone layer 11 makes the saturated water in sandstone layer 11 flow out cavity 1 from the discharge outlet 16 to 11 gas injection of the sandstone layer again after being saturated
Outside.In the present embodiment, two water filling ports 14, water gas injection port 15 and discharge outlet 16 are axially distributed on the cavity wall of cavity 1.
The lid 2 is equipped with multiple relief holes 201, in the present embodiment there are four the settings of relief hole 201, the relief hole
201 for allowing the probe groups of the resistivity of sandstone layer 11 and pressure described in bit test.The mixing rock core test cabinet includes sandstone layer
With the rock core of two kinds of different lithologies of shale layer, sandstone layer is located between shale layer and filled water forms water on shale layer
Layer, more actually in analog composite stratum reservoir cap rock geologic structure.
As shown in figure 4, a kind of mud stone breakthrough pressure test device including mixing rock core test cabinet, including mixing rock core are surveyed
Room 20 is tried, the water filling gas injection port 15 on the mixing rock core test cabinet is connected to by pipeline with sink 21, connection water filling gas injection port 15
Second switch valve 22 is in series with close to 21 end of sink, be in series with the first pressure close to 15 end of water filling gas injection port with the pipeline of sink 21
Power table 23.23 place pipeline of first pressure gauge is also parallel with the gas cylinder 24 equipped with inert gas, is in gas cylinder 24 in the present embodiment
Nitrogen, because with sandstone, mud stone the physical-chemical reactions such as absorption will not occur for nitrogen, so that it is guaranteed that the accuracy of test result.The
Pipeline between one pressure gauge 23 and gas cylinder 24 along gas injection direction be sequentially connected in series the 4th pressure gauge 27, first switch valve 26,
The drier 25 of drying nitrogen.It is additionally provided with water-level gauge 37 in the sink 21, it is timely to be conducive to the water observed in sink 21
Water is added to meet the water demand repeatedly tested, sink 21 is also connected with one for adding confining pressure to the mixing rock core test cabinet 20
Booster pump 38.
Water filling port 14 on the mixing rock core test cabinet is connected to by water pipe with sink 21 respectively.Each water filling port 14 and water
It is in series with second pressure gauge 28, third pressure gauge 29 respectively for monitoring mud stone close to 14 end of water filling port on the water pipe that slot 21 is connected to
The pressure for the water layer that injection water in 12 side of layer is formed is in series with third controlled valve 30, the 4th switch valve respectively close to 21 end of sink
Door 31, wherein second pressure gauge 28 and third controlled valve 30 are mounted on to be connected to the water filling port 14 on mixing rock core test cabinet top
Water pipe on, third pressure gauge 29, the 4th controlled valve 31 then be mounted on mix rock core test cabinet lower part water filling port 14 company
On logical water pipe.
Discharge outlet 16 on the mixing rock core test cabinet is connected to by water pipe with wastewater disposal basin 32, discharge outlet 16 and wastewater disposal basin 32
Between the direction of water pipe upper edge wastewater disposal basin 32 be sequentially connected in series the 5th controlled valve 33, the 5th pressure gauge 34.
Be mounted in sandstone layer 11 in the mixing rock core test cabinet four measure 11 different time resistivity of sandstone layer and
The probe groups 35 of pressure, four probe groups 35 are numbered from left to right is followed successively by 1,2,3,4, and each probe groups 35 include to measure sandstone
The probe of 11 pressure of layer and the probe of 11 resistivity of sandstone layer is measured simultaneously, each probe groups 35 are from mixing rock core test cabinet lid
Relief hole 201 on son is inserted into the middle part of the sandstone layer 11 from the top down, and each 35 only needle point end of probe groups can be surveyed
Measure other position insulation processings.For the data transmission that the probe groups 35 monitor to the ends PC 36, which utilizes programming A Erqi
The data that probe groups 35 monitor are converted to the water saturation of sandstone layer 11, analysis water saturation, displacement pressure difference, layer by formula
Between relationship between pressure difference and water yield.When shale layer 12 is broken through, the resistivity that probe groups 35 monitor can decline rapidly, simultaneously
11 water saturation of sandstone layer increases sharply, and two shale layers 12 and the interlayer pressure difference of sandstone layer 11 measured at this time are shale layer
12 breakthrough pressure.
Those skilled in the art are readily apparent that second pressure gauge 28, the third pressure of the aquifer pressure of 12 side of monitoring shale layer
The pressure value that table 29 can also replace with probe monitoring directly inputs the ends PC 36.
It is tested using the above-mentioned mud stone breakthrough pressure test device comprising mixing rock core test cabinet, laboratory operating procedures
It is as follows：
1, stratum simulated environment is formed：Second switch valve 22 and booster pump 38 are only opened, the water in sink 21 is injected
Into 11 region of sandstone layer, when 23 numerical value of first pressure gauge reaches stable, indicates that sandstone layer 11 is aqueous and be saturated, immediately at this time
Close the power supply and second switch valve 22 of booster pump 38.After spending a few minutes, third controlled valve 30, the 4th switch valve are opened
Door 31 and open booster pump 38, by the water in sink 21 be injected into two shale layers 12 with mix rock core test cabinet upper and lower ends face it
Between reserved space 13 in, formed up and down water layer, pass through second pressure gauge 28, the size and first pressure gauge of third pressure gauge 29
The differential mode of 23 numerical values recited draws up the pressure condition between reservoir and cap rock in stratum.
2, gas injection expelling water：Third controlled valve 30, the 4th controlled valve 31 are closed, first switch valve the 26, the 5th is opened
Controlled valve 33 is injected into the nitrogen in gas cylinder 24 in the sandstone layer 11 in mixing rock core test cabinet 20, according to atmospheric pressure with
Nitrogen is gone out sandstone by the energy that the pressure difference formed in mixing rock core test cabinet is provided from mixing rock core test cabinet right end displacement
11 inside saturated water of layer.
3, data record and analysis：It is slow using booster pump 38 after the saturated water that nitrogen flooding is replaced out in sandstone layer 11
Water layer pressurization into upper and lower two reserved space 13, and record pressure difference in the pressure with sandstone layer 11 of two water layers up and down and change size
(i.e. second pressure gauge 28 or the pressure value of third pressure gauge 29 and 11 pressure mean value of sandstone layer measured by four groups of probe groups 35
Pressure difference), resistivity R1, R2, R3, R4 of the different time that four probe groups are recorded out and corresponding pressure P1, P2, P3,
Data are converted to water saturation by P4 data transmissions to the ends PC 36, and using programming Archie formula, analysis water saturation,
Relationship between displacement pressure difference, interlayer pressure difference and water yield.When water breakthrough shale layer 12, resistivity can be rapid in sandstone layer 11
Decline, the water saturation of sandstone layer 11 increases sharply, at this time the pressure measured by second pressure gauge 28 or third pressure gauge 29
The pressure difference of power and 11 pressure mean value of sandstone layer measured by four groups of probe groups 35 is breakthrough pressure.
To ensure that test result is accurate, the corner of 20 inner cavity of mixing rock core test cabinet in above-mentioned experiment uses same rocks
Particulate fills, while assembling probe groups, pipeline, pressure gauge etc. and using silicone rubber seal.
Experimental record process：
(1) April 5, zero proceeded by gas drive, since the water in sandstone layer 11 is constantly displaced, in total trend,
Its water saturation constantly declines, and the resistivity that four probe groups measure is gradually increasing.
(2) pressure and the resistivity fluctuation in 0 point to 16 points of April 5, sandstone layer 11 are larger, unstable, should not measure at this time
Water breakthrough breakthrough pressure.
(3) pressure and the resistivity fluctuation in 16 points of April 5 to 2 points of April 6, the stage sandstone layer 11 are gradually small, due to after
Continuous gas injection, the resistivity value of four test points continues to increase, but amplification is smaller.
(4) start 2 points of April 6 to form two water layers up and down, injection to upper and lower two insulating spaces, 13 water filling with booster pump 38
The initial pressure difference of pressure and sandstone layer 11 is 0.24MPa, (i.e. second pressure gauge 28 or the pressure value of third pressure gauge 29 and four groups
The pressure difference of 11 pressure mean value of sandstone layer measured by probe groups 35) 10 points, resistance value shows shale layer there are one the increased period
12 water does not test this and presses force value not completely into sandstone layer 11.
(5) 10 points of April 6 injection pressure difference is increased to 0.43MPa, 11 resistance of sandstone layer is begun to decline, mud stone at 12 points
Completely into sandstone layer 11 channelling phenomenon in layer occurs for the water in layer 12, and it is that this experimental program needs to survey to measure pressure difference at this time just
The breakthrough pressure obtained, the value size are 0.43MPa.
Analysis of experimental results
As shown in Figure 5 and Figure 6, the data during experimental record are depicted as curve, since four groups of probes 35 are in sandstone layer
The different four groups of probes 35 in 11 the position respective measured pressure of sandstone layer 11 and the pressure difference of aquifer pressure have fine difference, with
And the resistivity of the respective measured sandstone layer 11 of four groups of probes 35 is also variant, than more actually simulating earth formation.This
Secondary experiment rock sample is taken from Sebei Gas Field, and the mud stone layer thickness of the rock sample is 20cm, shale content 52%, using same sample prescription
Method tests the breakthrough pressure of other two pieces of shale layer samples, and the correspondence breakthrough pressure that shale content is 63% is 0.76MPa, mud
The correspondence breakthrough pressure that matter content is 81% is 1.23MPa.Breakthrough pressure increases with the increase of shale content.Sebei Gas Field
Mudstone barriers shale content is 50~70%, according to this item experiment as a result, to the packing pressure difference of interlayer be 0.36~
0.95MPa。
Find that shale content is directly proportional to breakthrough pressure by the way that experimental result is carried out binomial regression analysis, analysis result
As shown in Figure 7.It is predicted under different shale contents by this method, corresponding rock breaks through pressure in different compartment thickness conditions
Power, specific data are as shown in table 1：
1 breakthrough pressure prediction data (MPa) of table
In conclusion using that more actually can simulate ground in mud stone breakthrough pressure test device test process of the invention
Layer physical condition tests mud stone breakthrough pressure while fluid flowing especially can be considered, and is surveyed by probe groups
Trying the situation of change of the moisture content of sandstone layer keeps test more accurate.
Claims (6)
1. a kind of mixing rock core test cabinet, it is characterised in that：Cavity (1) including one end open, the open end of cavity are detachable
Lid (2) for seal cavity (1) is set；Sandstone layer (11), the sandstone layer are equipped in the middle part of the cavity (1) in the horizontal direction
(11) upper and lower surface is arranged with shale layer (12), each shale layer (12) and the adjacent end of the cavity (1) it
Between there are reserved space (13)；The cavity wall of the cavity (1) is equipped with the water filling port (14) being connected to the reserved space (13),
By water filling port (14) water layer is formed to the reserved space (13) water filling；
Water filling gas injection port (15) and discharge outlet (16), water filling gas injection port (15) are also symmetrically offered in the cavity wall of the cavity (1)
It is connected to sandstone layer (11) with discharge outlet (16)；The water filling gas injection port (15) is used to make sand to the sandstone layer (11) water filling
Make the saturated water in sandstone layer (11) from institute to the sandstone layer (11) gas injection again after rock stratum (11) saturation, sandstone layer (11) saturation
State discharge outlet (16) outflow cavity (1) outside；
The lid (2) is equipped with multiple relief holes (201), and the relief hole (201) is for allowing sandstone layer described in bit test (11)
Resistivity and pressure probe groups.
2. mixing rock core test cabinet according to claim 1, it is characterised in that：Relief hole (201) on the lid has
Four.
3. a kind of mud stone breakthrough pressure test device including mixing rock core test cabinet as claimed in claim 1 or 2, feature exist
In：Including mixing rock core test cabinet (20), the water filling gas injection port (15) on the mixing rock core test cabinet passes through pipeline and sink
(21) it is connected to, connection water filling gas injection port (15) and the pipeline of sink (21) are in series with second switch valve close to sink (21) end
(22), it is in series with first pressure gauge (23) close to water filling gas injection port (15) end；Pipeline where first pressure gauge (23) is also parallel with
Gas cylinder (24) equipped with inert gas；Pipeline upper edge gas injection direction between first pressure gauge (23) and gas cylinder (24) is sequentially connected in series
There are the 4th pressure gauge (27), first switch valve (26), drier (25)；
Water filling port (14) on the mixing rock core test cabinet is connected to by water pipe with sink (21) respectively；Each water filling port (14) with
Sink (21) connection water pipe on close to water filling port (14) end be in series with respectively second pressure gauge (28), third pressure gauge (29),
It is in series with third controlled valve (30), the 4th controlled valve (31) respectively close to sink (21) end；
Discharge outlet (16) on the mixing rock core test cabinet is connected to by water pipe with wastewater disposal basin (32), discharge outlet (16) and wastewater disposal basin
(32) the water pipe upper edge drainage direction between has been sequentially connected in series the 5th controlled valve (33), the 5th pressure gauge (34)；
Be mounted in sandstone layer (11) in the mixing rock core test cabinet multiple measurements sandstone layer (11) different time resistivity with
The probe groups (35) of pressure, each probe groups (35) are inserted from the top down from the relief hole (20 1) on mixing rock core test cabinet lid
Enter the middle part of the sandstone layer (11), and each probe groups (35) only needle point end can measure, other position insulation processings；
For the data transmission of probe groups (35) monitoring to the ends PC (36), which utilizes programming Archie formula by probe groups
(35) monitor data be converted to sandstone layer (11) water saturation, analysis water saturation, displacement pressure difference, interlayer pressure difference and
Relationship between water yield；When shale layer (12) are broken through, the resistivity of probe groups (35) monitoring can decline rapidly, while sandstone
Layer (11) water saturation increases sharply, and the interlayer pressure difference measured at this time is the breakthrough pressure of shale layer (12).
4. mud stone breakthrough pressure test device according to claim 3, it is characterised in that：It is also set up in the sink (21)
There are water-level gauge (37), sink (21) to be also connected with a booster pump (38).
5. mud stone breakthrough pressure test device according to claim 3, it is characterised in that：Gas in the gas cylinder (24)
It is nitrogen.
6. mud stone breakthrough pressure test device according to claim 3, it is characterised in that：Each probe groups (35) packet
The probe of sandstone layer (11) pressure containing measurement and the probe for measuring sandstone layer (11) resistivity simultaneously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610019815.3A CN105547848B (en) | 2016-01-13 | 2016-01-13 | A kind of mixing rock core test cabinet and mud stone breakthrough pressure test device |
Applications Claiming Priority (1)
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| RU2723232C1 (en) * | 2017-11-23 | 2020-06-09 | Чайна Юниверсити Оф Майнинг Энд Текнолоджи | Device and method of experimental determination of gas breakthrough pressure |
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| CN110671102B (en) * | 2019-10-14 | 2022-09-09 | 重庆科技学院 | Method and system for determining critical sand production pressure difference of gas well |
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Application publication date: 20160504 Assignee: Guangzhou Senyu automation machinery design Co.,Ltd. Assignor: Chongqing University of Science & Technology Contract record no.: X2023980048633 Denomination of invention: A Mixed Core Testing Laboratory and Mudstone Breakthrough Pressure Testing Device Granted publication date: 20180928 License type: Common License Record date: 20231204 Application publication date: 20160504 Assignee: Guangzhou Xinrong Electric Automation Co.,Ltd. Assignor: Chongqing University of Science & Technology Contract record no.: X2023980048631 Denomination of invention: A Mixed Core Testing Laboratory and Mudstone Breakthrough Pressure Testing Device Granted publication date: 20180928 License type: Common License Record date: 20231204 Application publication date: 20160504 Assignee: Guangzhou Ruiming Technology Co.,Ltd. Assignor: Chongqing University of Science & Technology Contract record no.: X2023980048629 Denomination of invention: A Mixed Core Testing Laboratory and Mudstone Breakthrough Pressure Testing Device Granted publication date: 20180928 License type: Common License Record date: 20231204 Application publication date: 20160504 Assignee: Guangzhou Kunpeng Intelligent Equipment Co.,Ltd. Assignor: Chongqing University of Science & Technology Contract record no.: X2023980048626 Denomination of invention: A Mixed Core Testing Laboratory and Mudstone Breakthrough Pressure Testing Device Granted publication date: 20180928 License type: Common License Record date: 20231204 Application publication date: 20160504 Assignee: Guangzhou chuangying Machinery Design Co.,Ltd. Assignor: Chongqing University of Science & Technology Contract record no.: X2023980048624 Denomination of invention: A Mixed Core Testing Laboratory and Mudstone Breakthrough Pressure Testing Device Granted publication date: 20180928 License type: Common License Record date: 20231204 |
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